Everything DoseRank tracks on the bars shelf — Ferrous Bisglycinate. The category itself is never ranked: 160 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.
A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.
Questions
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.
Start with a goal, not a brand
Browsing bars supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
FerritinMarker of iron stores.42 rankedStrong
HemoglobinBlood oxygen-carrying protein concentration.42 rankedStrong
Potassium statusBody potassium balance.41 rankedStrong
Pregnancy complicationsAdverse maternal or fetal events during pregnancy.38 rankedStrong
Lean body massNon-fat body mass, often used as a marker of preserved musculature.47 rankedStrong
Vitamin E statusBiochemical sufficiency of tocopherols/tocotrienols.60 rankedStrong
Muscle massQuantity of skeletal muscle tissue.52 rankedStrong
Muscle weaknessReduced ability to generate force.35 rankedModerate-strong
StrokeCerebrovascular event causing neurologic injury.45 rankedStrong
Wrinkle severityDegree of visible skin wrinkling.12 rankedStrong
Anemia statusPresence of clinically meaningful low red cell mass or hemoglobin.48 rankedStrong
Alanine aminotransferase (ALT)Liver enzyme used to assess hepatocellular injury.23 rankedStrong
Bone turnover markersBiochemical indicators of bone formation and resorption.16 rankedStrong
Sodium statusBody sodium balance.45 rankedStrong
Delayed-onset muscle sorenessPost-exercise muscle pain and stiffness.70 rankedModerate-strongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best bars supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 160 products against that goal's trials.